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FOERFARANDE FOER FRAMSTAELLNING AV SUBSTITUERADE BENSENER OCH BENSENSULFONSYRA SAMT DERAS DERIVAT OCH FOERFARANDE FOER FRAMSTAELLNING AV N, N'-SUBSTITUERADE UREAFOERENINGAR
FOERFARANDE FOER FRAMSTAELLNING AV SUBSTITUERADE BENSENER OCH BENSENSULFONSYRA SAMT DERAS DERIVAT OCH FOERFARANDE FOER FRAMSTAELLNING AV N, N'-SUBSTITUERADE UREAFOERENINGAR
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机译:制备取代的苯甲醛和苯磺酸的方法及其衍生物和制备N,N'取代的尿素的方法
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摘要
A process for the preparation of substituted benzenes or benzenesulfonic acid and its derivatives comprising diazotisation of an aminobenzene or ortho-amino-benzenesulfonic acid derivative followed by homogeneous palladium-catalysed coupling with an olefine and heterogeneous palladium-catalysed hydrogenation of the olefinic substituent, wherein the homogeneous catalyst is reduced and precipitated as metal after the coupling in the reaction mixture and used as a heterogeneous palladium catalyst for the hydrogenation step. The process is particular suitable for the preperation N-benzenesulfon-N'-triazinyl-urea herbicides.
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